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Finding the Fourth Proportional to 43,363.80, 65,030.16 and 18,405.56

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Solution

The fourth proportional to 43,363.80, 65,030.16 and 18,405.56 is: 27,601.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,363.80 : 65,030.16 = 18,405.56 : x
  2. Step 2: Convert to fraction form
    43,363.80/65,030.16 = 18,405.56/x
  3. Step 3: Cross multiply
    43,363.80x = 65,030.16 × 18,405.56
  4. Step 4: Simplify right side
    43,363.80x = 1,196,916,511.69
  5. Step 5: Solve for x
    x = 1,196,916,511.69/43,363.80
  6. Step 6: Final answer
    x = 27,601.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.